Production of titanium-nitrogen compounds.



UNITED STATES PATENT OFFICE.

CARL BOSGH, OF LUDWIGSHAFEN-ON-TI-IE-RHINE, GERMANY, ASSIGNOR TO BADISCI-IE ANILIN & SODA FABRIK, OF LUDWIGSHAFEN-ON-TI-IE-RHINE, GERMANY, A COR- PORATION.

No Drawing.

To all whom it may concern:

Be it known that I, CARL Boson, doctor vof philosophy and chemist, subject of the and a stream of nitrogen is passed in contact with the same, the nitrogen is'taken up and compounds containing titanium and nitrogen are formed. A temperature of 2,000 (1., however, exercises a very deleterious influence on the apparatus used.

I have discovered that the production of titanium-nitrogen compounds (under which term I include both the titanium nitrids and also the so-called titanium cyanonitrid) by heating a mixture of titanic acid, or other titanium compound containing oxygen, with carbon in the presence of nitrogen gas, proceeds rapidly at a comparatively low temperature if an alkali salt be present during the reaction. The alkali salt appears to act as a catalytic agent and even verysmall quantities thereof greatly increase the rapidity of the reaction.

A minimum temperature of 1,100 C. is necessary when carrying out the process of this invention.

Specification of Letters Patent.

PRODUCTION OF TITANIUM-NITROGEN COMPOUNDS.

Patented May 10,1910.

Application filed March 2, 1908. Serial No. 418,847.

The following example will serve to illustrate further the nature of my invention, which, however, is not confined to this example. The parts are by weight.

Mix together 80 parts of titanic acid, 20 parts of wood charcoal, and 2 parts of sodium sulfate, or other alkali salt, such for instance as sodium carbonate. Heat this mixture for 2 hours in a current of nitrogen, at about 1,240 C. The reaction which takes place can be represented by the equation Now what I claim is:

1. The process of producing titanium nitrogen compounds by heating an oxygencontaining titanium compound, carbon and analkali salt in the presence of nitrogen.

2. The process of producing titanium-nitrogen compounds by heating a mixture con: taining titanic acid, carbon and an alkali salt in the presence of nitrogen gas at a temperature above 1,100 C.

p 3. The process of producing titanium-nitrogen compounds by heating a mixture containing titanic acid, carbon and sodium sulfate in the presence of nitrogen gas at a temperature above 1,100 C.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CARL BOSCH. Witnesses:

.J. ALEo. LLOYD,

Jos. I-I. LEUTE. 

